This standard specifies the requirements, test methods, inspection rules and marking, packaging, transportation and storage of rigid polyvinyl chloride (PVGU) low foaming sheets by the Celluka process. This standard applies to rigid polyvinyl chloride low foaming sheets (hereinafter referred to as "sheets") made by the Celluka process using polyvinyl chloride resin as the main raw material, with various additives, mixed and extruded by the Celluka process. QB/T 2463.2-1999 Rigid polyvinyl chloride low foaming sheets Celluka process QB/T2463.2-1999 Standard download decompression password: www.bzxz.net

QB/T2463.2—1999
Cellular rigid polyvinyl chloride low foaming board has the characteristics of light weight, flame retardant, corrosion and moisture resistance, heat preservation and shock absorption, long life, high strength, good resistance to environmental stress, etc. It can be thermoformed and can be nailed, chiseled, riveted, etc. It is widely used in decoration, commerce, construction, automobiles, ships, furniture, transportation and other industries. It has far-reaching significance for promoting the use of plastics instead of wood, plastics instead of metal, environmental protection, fire safety, energy conservation, etc. This standard is the second of a series of standards for the rigid polyvinyl fluoride (PVCU) foaming board industry. This standard was proposed by the National Technical Committee for Standardization of Plastic Products. The Plastic Processing and Application Research Institute of China Light Industry Association is under the jurisdiction of this standard. This standard is jointly drafted by the State Economic and Technological Development Bureau, Baoliwei Chemical Building Materials Co., Ltd., Heilongjiang Jixi Plastic Factory, Anhui Guofeng Plastic Industry Co., Ltd., and Beijing Air Asia Building Materials Co., Ltd. The main drafters of this standard are: Liu Jun, Huang Qijie Gong Youjun, Li Yongcui, Gong Peiyi 1
Light Industry Industry Standard of the People's Republic of China
Rigid polyvinyl chloride low foaming board
Silica method
QB/T2463.2—1999
This standard specifies the requirements, test methods, inspection rules and markings, packaging, transportation and storage of Silica method rigid polyvinyl chloride (PVCL) low foaming board
The standard is based on polyvinyl chloride resin as the main raw material, with various additives: after compounding, it is made of high-quality polyvinyl chloride low foaming board (hereinafter referred to as "board") made by Silica method extrusion process. 2 Cited standards
The provisions contained in the following standards constitute the provisions of this standard through the period of reference in this standard. At the time of publication of this standard, the versions shown are all valid: all standards will be revised, and parties using this standard should explore the possibility of using the latest version of the following standards. G3/1 10341998
GB/T 1040 1992
G3/T 1013---1953
GB/T 1633
3/T 241-:989
G3/ 2828—1987
GH/T 29IS
GB/T 6.43: 1995bzxz.net
GB 8624 ---1597
Test method for water absorption of plastics
Tensile test method for plastics
Test method for tooth punching of simply supported beams of rigid plastics
Test method for softening point (keka) of thermoplasticsTest method for the hardness of plastics
Sampling procedure and sampling table for batch inspection (certificate for inspection of consecutive batches) Conditioning of plastic specimens and standard environment of specimens Determination of apparent (bulk) density of foamed plastics and rubber Classification method for combustion performance of building materials
GB/881
G3/T 9341--1988
Test method for dimensional stability and ductility of rigid foam plastics Test method for bending properties of plastics
GB/T11718.9--1989 Determination of screw holding force of medium density fiberboard 3 Requirements
3.1 Appearance, color and cross section
The board should be flat and should not have defects such as convexity, scars, deformation, cracks, stripes, impurities, etc. that may affect its use. The bottom of the board in the same batch should be uniform and the cross section and foaming should be uniform.
The warping of the board should meet the requirements of the table
The board should be reduced, n
Approved by the State Bureau of Light Industry on October 14, 1999
FTTKAONIKA-
Implementation on March 1, 2000
3.3 Diagonal difference
The diagonal difference of the board should be less than 10 mm.
3.4 ​​Dimensional limit deviation
B/T2463.2—1999
The dimensional limit deviation of the plate shall comply with the provisions of Table 2. Table 2
3.5 Physical and mechanical properties
The physical and mechanical properties of the board shall comply with the requirements of Table 3 Table 3
Apparent density
Shore grinding mill
Tensile strength
Elongation at break
Simply supported beam impact strength
Vi·Cat melting point
And thermal scale change rate
Water absorption
Flexural strength
Elastic modulus
Method: Flexural elastic modulus and screw holding force shall be mainly tested when the customer requires it. 3.6 Combustion performance
Limit deviation
No extreme deviation is allowed
No negative deviation is allowed
In addition to complying with the indicators in Table 3, the board used as interior decoration material shall also comply with the provisions of GB8624 for flame retardant B1 grade materials. 4 Test method
4.1 Test specimen state and test environment
Perform in accordance with GB/T 2918. Temperature (23°C to 2°C), conditioning time not less than 24 h. 4.2~4.5 Perform the test in accordance with this clause only when cutting.
4.2 Appearance, color and cut inspection
Test under natural light at a distance of 601 mm from the plate. 4.3
QT 2463. 2--1999
Put the plate on the horizontal plane L:, take the diagonal line of the plate as the reference line, use a ruler with an accuracy of 1 mm to measure the maximum distance between the warped surface of the plate and the reference line, and then divide this distance by the length of the reference line (mm/m). 4.4 Diagonal difference
Use a tape measure with an accuracy of 1°C to measure the length of the two diagonals of the plate, and take the difference in the diagonal lengths. 4.5 Dimensional limit deviations
4.5.1 Length and width
Measure with a tape measure or ruler with an accuracy of 1 mm. 4.5.2 Thickness
Measure with a measuring tool with an accuracy of (0.02 mm), and the distance between the measuring point and the edge of the plate shall not be less than 20 mm. In the width square, measure one point at every 1 mm interval and take the maximum value and the minimum value. 4.6 Mechanical properties
4.6.1 Sampling
Cut off the 1 mm width edge of the longitudinal side of the plate and sample evenly. The pore structure shall not be destroyed during sampling. 4.6.2 Apparent density
Measure according to GB/T6343 and take the original plate. 4.6.3 Shore hardness
Measure according to GB/T24:1 + measure the crust surface and take the original plate thickness. 4.6.4: Tensile strength and elongation at break
According to GB/T1010 The test specimen is type 1 specimen, the original thickness of the material is taken, and the tensile speed is 20nm/min10%. 4.6.5 Simple beam impact strength
is measured according to GB/F1043, the specimen is type I specimen without missing doors, the original order of the plate is taken, and the crust surface is impacted. 4.6.6 Vicat softening humidity
is measured according to G3/T1633, the test load is 9.819N, and the constant heating rate is (50±5)℃/h. 4.6.7 Heating minimum change rate
is measured according to (B/8811. Test The temperature is (70 ± 2) °C. The test time is 2h. The test results are the dimensional change rate values ​​in the length and width directions.
4.6.8 Water absorption
Measured according to GB/T1034, test temperature (23 ± 2) °C, time (21 ± 1) h, 4.6.9 Flexural strength and flexural modulus
Measured according to G13/T93-11, measuring the crust surface 4.6.10 Spiral strength
Measured according to (:H/1 month 718.9, measuring the direction most perpendicular to the crust surface, 4.6.11 Combustibility
It can be measured according to GH8624.
5 Inspection rules
The product must be inspected by the manufacturer's quality inspection department according to the factory inspection items of this standard and the certificate of conformity must be attached before it can be shipped out of the factory. 5.1 Batch maintenance method
The same batch of raw materials with the same formula, the same process, and the same specification are continuously produced as a batch. The annual batch quantity shall not exceed 60t. The unit is based on the sample.
5.2 Sampling
The appearance, warpage, diagonal difference, and limit deviation of the plate are tested according to GB/T 2828 The secondary normal sampling plan specified in QB/T 2463.2-1999 is carried out, where the inspection level is I and the qualified quality level (AQL) is 6.5. The physical and mechanical properties inspection is carried out in batches. Three sheets of each batch are randomly selected for testing. 5. 3 Product inspection is divided into factory inspection and type inspection. Inspection items include external gauge, warpage, minimum limit deviation, diagonal difference, apparent density, and Shore hardness. Type inspection includes: appearance, warpage, minimum limit deviation, diagonal difference, apparent density, Shore hardness, tensile strength, elongation at break, simple supported strength, Vicat softening point, heating dimensional change rate, and bending strength. Combustion performance, screw holding force and bending elastic modulus are inspected when required by some customers. Type inspection is usually carried out once a year during production.Type inspection is not carried out when any of the following circumstances occurs: 1) When the raw materials and process have changed significantly; 2) When the production has been stopped for more than half a year or when a new product is produced; 3) When the inspection result is significantly different from the last type inspection: 4) When the national quality supervision department makes a request. 5.4 Judgment rules
5. 4.1 Quality judgment of appearance and dimensional limit deviation According to the results of the sample inspection, if one or more indicators of appearance and dimensional limit deviation do not meet the requirements of this standard, the sample unit shall be judged as unqualified. Based on the results of the sample unit inspection, the (B/2828) judgment shall be made. If the number of unqualified sample units does not exceed the qualified judgment number (A) specified for the batch quality level, the quality of the delivered batch shall be judged to be qualified: if it exceeds the qualified judgment number (R), the quality of the delivered batch shall be judged to be unqualified: if it is between A. and R., a second sample shall be made for judgment. 5.4.2 The difference between the negative line and the physical and mechanical properties shall be used to determine the above-mentioned neck. If there is any neck that does not meet the standard, double samples shall be drawn from the original batch and the unqualified items shall be retested. If the retest fails, the lamp shall be unqualified.
6 Marking, packaging, transportation, storage
6.1 Marking
The board packaging shall be marked with product name, specification, trademark, batch number, production name, factory, standard number, etc. and accompanied by product specifications:
6.2 Packaging
The product packaging shall be made of cardboard, dry board, film, woven fabric, etc. as a protective layer and shall be secured with packing tape. 6.3 During transportation, the board shall be protected from heavy pressure, sun exposure, rain and mechanical damage to ensure the integrity of the packaging. 6 4 Storage
The board shall be stacked horizontally in a dry, ventilated, clean warehouse away from heat sources. The height of the board shall not exceed 1mM.
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